CVE-2026-88777: Vulnerability in Citrix NetScaler ADC
CVE-2026-88777 is a memory overflow vulnerability in Citrix NetScaler ADC and Gateway products. It affects versions prior to 14.1-73.37 and 13.1-64.23, including certain FIPS and NDcPP variants. The flaw can cause unpredictable or erroneous behavior and may lead to Denial of Service conditions. The vulnerability has a high severity rating with a CVSS 4.0 base score of 8.8. No known exploits in the wild have been reported. The issue is not related to a cloud service and no specific patch links were provided in the data.
AI Analysis
Technical Summary
This vulnerability involves a memory overflow in Citrix NetScaler ADC and Gateway devices, affecting versions before 14.1-73.37 and 13.1-64.23, including FIPS and NDcPP versions. The overflow can cause the devices to behave unpredictably or crash, resulting in Denial of Service. The CVSS 4.0 vector indicates it is remotely exploitable without privileges or user interaction, with high impact on availability and moderate impact on confidentiality and integrity. The vendor has identified the affected versions but no explicit patch information is provided in the input data.
Potential Impact
Successful exploitation can cause Denial of Service by triggering unpredictable or erroneous behavior due to memory overflow. This can disrupt network services relying on Citrix NetScaler ADC and Gateway devices. There is no indication of confidentiality or integrity compromise beyond the availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or workaround information is provided, users should monitor Citrix advisories for updates. Until a fix is available, consider limiting exposure of affected devices to untrusted networks.
CVE-2026-88777: Vulnerability in Citrix NetScaler ADC
Description
CVE-2026-88777 is a memory overflow vulnerability in Citrix NetScaler ADC and Gateway products. It affects versions prior to 14.1-73.37 and 13.1-64.23, including certain FIPS and NDcPP variants. The flaw can cause unpredictable or erroneous behavior and may lead to Denial of Service conditions. The vulnerability has a high severity rating with a CVSS 4.0 base score of 8.8. No known exploits in the wild have been reported. The issue is not related to a cloud service and no specific patch links were provided in the data.
CVSS v4.0
Score 8.8high
Affected software
Citrix NetScaler
ADC
Citrix NetScaler
Gateway
pkg:github/citrix/netscaler-adcRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a memory overflow in Citrix NetScaler ADC and Gateway devices, affecting versions before 14.1-73.37 and 13.1-64.23, including FIPS and NDcPP versions. The overflow can cause the devices to behave unpredictably or crash, resulting in Denial of Service. The CVSS 4.0 vector indicates it is remotely exploitable without privileges or user interaction, with high impact on availability and moderate impact on confidentiality and integrity. The vendor has identified the affected versions but no explicit patch information is provided in the input data.
Potential Impact
Successful exploitation can cause Denial of Service by triggering unpredictable or erroneous behavior due to memory overflow. This can disrupt network services relying on Citrix NetScaler ADC and Gateway devices. There is no indication of confidentiality or integrity compromise beyond the availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or workaround information is provided, users should monitor Citrix advisories for updates. Until a fix is available, consider limiting exposure of affected devices to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- NetScaler
- Date Reserved
- 2026-09-10T07:14:57.370Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab948d1f7a7c541063df7bd
Added to database: 09/27/2026, 16:48:17 UTC
Last enriched: 09/27/2026, 17:02:59 UTC
Last updated: 09/27/2026, 17:50:28 UTC
Views: 7
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